Powerflex PFF5-1901G Caster Adjustable Front Tension Strut/Thrust Arm (Radius Arm) to Chassis Bush Kit for BMW 2 Series F22 F23 | Road Series Polyurethane Front Lower Control Arm Rear Bushes | Caster Correction Wishbone Bushing

BMW F22 F23 Front Tension Strut to Body Bush Kit - Caster Adjustable - PFF5-1901G

Transform the front end of your BMW 2 Series with the PFF5-1901G caster-adjustable thrust arm bushing set. This polyurethane upgrade replaces the soft factory mount on the front lower control arm rear position, delivering razor-sharp steering response, greater straight-line stability and more predictable cornering. Ideal for spirited road use and fast-road setups, this is a proven upgrade we have installed on customer cars and our own builds with excellent feedback.

Why this upgrade works

• On-car geometry tuning: approximately +/- 0.75 degrees of caster adjustment lets you fine-tune steering feel and front-end bite.
• Stiffer polymer construction: around 60% firmer than the OE rubber mount to curb unwanted movement and improve chassis control.
• Better tyre contact on turn-in: additional caster helps generate extra negative camber under load for enhanced grip.
• Consistent handling: maintains alignment under braking and cornering for a more connected, confidence-inspiring drive.

Key details

• Part number: PFF5-1901G
• Vehicle platform: BMW 2 Series F22 Coupe and F23 Convertible
• Location: Front lower control arm rear mount (radius/thrust arm to chassis)
• Diagram reference: 1
• Pack contents: 2 x bushes

OEM cross-reference

Direct replacement for OE numbers: 31126855743, 31126855741, 31126855742.

What our customers say

Fitted by us on multiple F22 and F23 cars, these caster-adjustable bushes deliver a noticeable uplift in steering precision and grip without compromising everyday usability. Owners report tighter turn-in, improved stability through fast bends and a more planted feel on B-roads.

Compatibility

Suits BMW 2 Series F22 and F23 front axle, thrust arm to body mounting point. Not for F87.

Alternative option

Prefer a fixed-geometry mount? The non-adjustable version is available separately: PFF5-1901.

Professional fitting

Installation by specialists recommended. Book fitting with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Search-friendly terms

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